<template>
    <a-layout>
        <a-layout-content :style="{ background: '#fff', padding: '24px', margin: 0, minHeight: '280px' }">
            <h3 v-if="level1.length === 0">对不起，找不到相关文档！</h3>
            <a-row>
                <a-col :span="6">
                    <a-tree v-if="level1.length > 0" :tree-data="level1" @select="onSelect"
                        :replaceFields="{ title: 'name', key: 'id', value: 'id' }" :defaultExpandAll="true"
                        :defaultSelectedKeys="defaultSelectedKeys">
                    </a-tree>
                </a-col>
                <a-col :span="18">

                    <div class="wangeditor" :innerHTML="html"></div>

                </a-col>
            </a-row>
        </a-layout-content>
    </a-layout>
</template>


<script lang="ts">
import { defineComponent, onMounted, ref, createVNode } from 'vue';
import axios from 'axios';
import { message } from 'ant-design-vue';
import { Tool } from "@/util/tool";
import { useRoute } from "vue-router";

export default defineComponent({
    name: 'Doc',
    setup() {
        const route = useRoute();
        const docs = ref();
        const html = ref();
        const defaultSelectedKeys = ref();
        defaultSelectedKeys.value = [];
        // 当前选中的文档
        const doc = ref();
        doc.value = {};

        /**
         * 一级文档树，children属性就是二级文档
         * [{
         *   id: "",
         *   name: "",
         *   children: [{
         *     id: "",
         *     name: "",
         *   }]
         * }]
         */
        const level1 = ref(); // 一级文档树，children属性就是二级文档
        level1.value = [];

        /**
         * 内容查询
         **/
        const handleQueryContent = (id: number) => {
            axios.get("/doc/find-content/" + id).then((response) => {
                const data = response.data;
                if (data.success) {
                    html.value = data.content;
                } else {
                    message.error(data.message);
                }
            });
        };

        /**
         * 数据查询
         **/
        const handleQuery = () => {
            axios.get("/doc/all/" + route.query.ebookId).then((response) => {
                const data = response.data;
                if (data.success) {
                    docs.value = data.content;

                    level1.value = [];
                    level1.value = Tool.array2Tree(docs.value, 0);


                    if (Tool.isNotEmpty(level1.value)) {
                        defaultSelectedKeys.value = [level1.value[0].id];
                        handleQueryContent(level1.value[0].id);
                        // 初始显示文档信息
                        doc.value = level1.value[0];
                    }
                } else {
                    message.error(data.message);
                }
            });
        };

        const onSelect = (selectedKeys: any, info: any) => {
            console.log('selected', selectedKeys, info);
            if (Tool.isNotEmpty(selectedKeys)) {
                // 选中某一节点时，加载该节点的文档信息
                doc.value = info.selectedNodes[0].props;
                // 加载内容
                handleQueryContent(selectedKeys[0]);
            }
        };



        onMounted(() => {
            handleQuery();
        });

        return {
            level1,
            html,
            onSelect,
            defaultSelectedKeys,
            doc,

        }
    }
});
</script>

<style>
/* wangeditor默认样式, 参照: http://www.wangeditor.com/doc/pages/02-%E5%86%85%E5%AE%B9%E5%A4%84%E7%90%86/03-%E8%8E%B7%E5%8F%96html.html */
/* table 样式 */
.wangeditor table {
    border-top: 1px solid #ccc;
    border-left: 1px solid #ccc;
}

.wangeditor table td,
.wangeditor table th {
    border-bottom: 1px solid #ccc;
    border-right: 1px solid #ccc;
    padding: 3px 5px;
}

.wangeditor table th {
    border-bottom: 2px solid #ccc;
    text-align: center;
}

/* blockquote 样式 */
.wangeditor blockquote {
    display: block;
    border-left: 8px solid #d0e5f2;
    padding: 5px 10px;
    margin: 10px 0;
    line-height: 1.4;
    font-size: 100%;
    background-color: #f1f1f1;
}

/* code 样式 */
.wangeditor code {
    display: inline-block;
    *display: inline;
    *zoom: 1;
    background-color: #f1f1f1;
    border-radius: 3px;
    padding: 3px 5px;
    margin: 0 3px;
}

.wangeditor pre code {
    display: block;
}

/* ul ol 样式 */
.wangeditor ul,
ol {
    margin: 10px 0 10px 20px;
}

/* 和antdv p冲突，覆盖掉 */
.wangeditor blockquote p {
    font-family: "YouYuan";
    margin: 20px 10px !important;
    font-size: 16px !important;
    font-weight: 600;
}
</style>